Monday Geology Picture: Botryoidal Ferromanganese Crust from the Ninetyeast Ridge, Indian Ocean

Monday Geology Picture, Ninetyeast Ridge 1 Minutes
Botryoidal ferromanganese crust dredged from the Ninetyeast Ridge, Indian Ocean, Summer 2007.

For this week’s geology picture, I thought I would share a picture of a neat botryoidal (grape-like texture) ferromanganese crust that was recovered during dredging along the Ninetyeast Ridge in the Indian Ocean in 2007. Ferromanganese crusts and nodules are commonly deposited in the ocean. They often form botryoidal shapes, such as the example above.

Published by Evelyn Mervine

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6 thoughts on “Monday Geology Picture: Botryoidal Ferromanganese Crust from the Ninetyeast Ridge, Indian Ocean”

  2. I don’t think we ever did mineralogical analysis on that sample, but FeMn deposits often have Mn minerals such as buserite, birnessite, todorokite, and vernadite.

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  5. Pingback: Monday Geology Picture: Ferromanganese-Encrusted Boulder from the Ninetyeast Ridge, Indian Ocean - Georneys - AGU Blogosphere

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